Question

Vreau doar de la d până la h

Answer 1

d) $\frac{x+y}{x-y} = \frac{7}{3}$
$7x-7y=3x+3y$
$7x-3x = 3y+7y$
$4x=10y$
$\frac{x}{y} = \frac{10}{4}$

e) $\frac{x}{x+2y} = \frac{5}{17}$
$17x=5x+10y$
$17x-5x=10y$
$12x=10y$
$\frac{x}{y} = \frac{10}{12}$

f) $\frac{2x+y}{x+2y} = \frac{13}{17}$
$34x+17y=13x+26y$
$34x-13x=26y-17y$
$21x=9y$
$\frac{x}{y} = \frac{9}{21}$

g) $\frac{2x-y}{x+y} = \frac{11}{16}$
$32x-16y=11x+11y$
$32x+11x=16x+11y$
$43x=27y$
$\frac{x}{y} = \frac{27}{43}$

h) $\frac{x}{3x+8y} = \frac{1}{9}$
$9x=3x+8y$
$9x-3x=8y$
$6x=8y$
$\frac{x}{y} = \frac{8}{6}$